Take it from a girl who prides herself on her ability to paint on a #flawless cat eye on the train, liquid eyeliner is the way to go. It may require a practiced hand, but once you master the technique, it ensures a pristine winged line in the manner of Sophia Loren. It all comes down to a vivid, long-lasting formula that won't bleed or flake and a superfine application brush for an immaculate flick. Here, I've narrowed down 5 picks, in a classic jet-black as well as eye-popping pigments, that are as foolproof as they are statement-making.